Roy has been around since the beginning, and as such he has a lot of names he’s forgotten about. Lorrimer has been alive for two hundred years, or there abouts. He can’t really remember when he was born, but he knows when he was turned. Point being, they’ve got a lot of names. Sometimes they need to talk about things, rather than drinking about them, so it’s how they remember. Swapping names helps them remember who they are. Roy has a list of names longer than any document he’s ever seen, and Lorrimer remembers all of his. It’s a game they’ve played before, but only when they’re alone. Their past lives are for them and no one else, certainly not Sir Max or Suki.